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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: JSimpleField.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.google.common.base.Converter;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import com.google.common.reflect.TypeToken;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.lang.reflect.Method;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.ArrayList;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.Collections;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.Comparator;<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.dellroad.stuff.java.Primitive;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.jsimpledb.core.FieldType;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.jsimpledb.schema.SimpleSchemaField;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.objectweb.asm.ClassWriter;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.objectweb.asm.MethodVisitor;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.objectweb.asm.Opcodes;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.objectweb.asm.Type;<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>/**<a name="line.26"></a>
<span class="sourceLineNo">027</span> * Represents a simple field in a {@link JClass} or a simple sub-field of a complex field in a {@link JClass}.<a name="line.27"></a>
<span class="sourceLineNo">028</span> */<a name="line.28"></a>
<span class="sourceLineNo">029</span>public class JSimpleField extends JField {<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>    final TypeToken&lt;?&gt; typeToken;<a name="line.31"></a>
<span class="sourceLineNo">032</span>    final FieldType&lt;?&gt; fieldType;<a name="line.32"></a>
<span class="sourceLineNo">033</span>    final boolean indexed;<a name="line.33"></a>
<span class="sourceLineNo">034</span>    final boolean unique;<a name="line.34"></a>
<span class="sourceLineNo">035</span>    final ArrayList&lt;Object&gt; uniqueExcludes;         // note: these are core API values, sorted by this.fieldType<a name="line.35"></a>
<span class="sourceLineNo">036</span>    final Method setter;<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>    JSimpleField(JSimpleDB jdb, String name, int storageId, TypeToken&lt;?&gt; typeToken, String typeName, boolean indexed,<a name="line.38"></a>
<span class="sourceLineNo">039</span>      org.jsimpledb.annotation.JField annotation, String description, Method getter, Method setter) {<a name="line.39"></a>
<span class="sourceLineNo">040</span>        this(jdb, name, storageId, typeToken,<a name="line.40"></a>
<span class="sourceLineNo">041</span>          jdb.db.getFieldTypeRegistry().getFieldType(typeName), indexed, annotation, description, getter, setter);<a name="line.41"></a>
<span class="sourceLineNo">042</span>    }<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span>    @SuppressWarnings("unchecked")<a name="line.44"></a>
<span class="sourceLineNo">045</span>    JSimpleField(JSimpleDB jdb, String name, int storageId, TypeToken&lt;?&gt; typeToken, FieldType&lt;?&gt; fieldType, boolean indexed,<a name="line.45"></a>
<span class="sourceLineNo">046</span>      org.jsimpledb.annotation.JField annotation, String description, Method getter, Method setter) {<a name="line.46"></a>
<span class="sourceLineNo">047</span>        super(jdb, name, storageId, description, getter);<a name="line.47"></a>
<span class="sourceLineNo">048</span>        if (typeToken == null)<a name="line.48"></a>
<span class="sourceLineNo">049</span>            throw new IllegalArgumentException("null typeToken");<a name="line.49"></a>
<span class="sourceLineNo">050</span>        if (fieldType == null)<a name="line.50"></a>
<span class="sourceLineNo">051</span>            throw new IllegalArgumentException("null fieldType");<a name="line.51"></a>
<span class="sourceLineNo">052</span>        if (annotation == null)<a name="line.52"></a>
<span class="sourceLineNo">053</span>            throw new IllegalArgumentException("null annotation");<a name="line.53"></a>
<span class="sourceLineNo">054</span>        this.typeToken = typeToken;<a name="line.54"></a>
<span class="sourceLineNo">055</span>        this.fieldType = fieldType;<a name="line.55"></a>
<span class="sourceLineNo">056</span>        this.indexed = indexed;<a name="line.56"></a>
<span class="sourceLineNo">057</span>        this.unique = annotation.unique();<a name="line.57"></a>
<span class="sourceLineNo">058</span>        this.setter = setter;<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>        // Parse uniqueExcludes<a name="line.60"></a>
<span class="sourceLineNo">061</span>        final int numExcludes = annotation.uniqueExclude().length + (annotation.uniqueExcludeNull() ? 1 : 0);<a name="line.61"></a>
<span class="sourceLineNo">062</span>        if (numExcludes &gt; 0) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>            this.uniqueExcludes = new ArrayList&lt;&gt;(numExcludes);<a name="line.63"></a>
<span class="sourceLineNo">064</span>            if (annotation.uniqueExcludeNull())<a name="line.64"></a>
<span class="sourceLineNo">065</span>                this.uniqueExcludes.add(null);<a name="line.65"></a>
<span class="sourceLineNo">066</span>            for (String string : annotation.uniqueExclude()) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>                try {<a name="line.67"></a>
<span class="sourceLineNo">068</span>                    this.uniqueExcludes.add(this.fieldType.fromString(string));<a name="line.68"></a>
<span class="sourceLineNo">069</span>                } catch (IllegalArgumentException e) {<a name="line.69"></a>
<span class="sourceLineNo">070</span>                    throw new IllegalArgumentException("invalid uniqueExclude() value `" + string + "': " + e.getMessage(), e);<a name="line.70"></a>
<span class="sourceLineNo">071</span>                }<a name="line.71"></a>
<span class="sourceLineNo">072</span>            }<a name="line.72"></a>
<span class="sourceLineNo">073</span>            Collections.sort(this.uniqueExcludes, (Comparator&lt;Object&gt;)this.fieldType);<a name="line.73"></a>
<span class="sourceLineNo">074</span>        } else<a name="line.74"></a>
<span class="sourceLineNo">075</span>            this.uniqueExcludes = null;<a name="line.75"></a>
<span class="sourceLineNo">076</span>    }<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span>    /**<a name="line.78"></a>
<span class="sourceLineNo">079</span>     * Get the {@link JComplexField} of which this instance is a sub-field, if any.<a name="line.79"></a>
<span class="sourceLineNo">080</span>     *<a name="line.80"></a>
<span class="sourceLineNo">081</span>     * @return parent {@link JComplexField}, or null if this instance is not a sub-field<a name="line.81"></a>
<span class="sourceLineNo">082</span>     */<a name="line.82"></a>
<span class="sourceLineNo">083</span>    public JComplexField getParentField() {<a name="line.83"></a>
<span class="sourceLineNo">084</span>        return this.parent instanceof JComplexField ? (JComplexField)this.parent : null;<a name="line.84"></a>
<span class="sourceLineNo">085</span>    }<a name="line.85"></a>
<span class="sourceLineNo">086</span><a name="line.86"></a>
<span class="sourceLineNo">087</span>    /**<a name="line.87"></a>
<span class="sourceLineNo">088</span>     * Get the type of this field.<a name="line.88"></a>
<span class="sourceLineNo">089</span>     *<a name="line.89"></a>
<span class="sourceLineNo">090</span>     * @return this field's Java type<a name="line.90"></a>
<span class="sourceLineNo">091</span>     */<a name="line.91"></a>
<span class="sourceLineNo">092</span>    public TypeToken&lt;?&gt; getTypeToken() {<a name="line.92"></a>
<span class="sourceLineNo">093</span>        return this.typeToken;<a name="line.93"></a>
<span class="sourceLineNo">094</span>    }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>    /**<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * Get the {@link org.jsimpledb.core.FieldType} used by the core API to encode this field's values.<a name="line.97"></a>
<span class="sourceLineNo">098</span>     *<a name="line.98"></a>
<span class="sourceLineNo">099</span>     * &lt;p&gt;<a name="line.99"></a>
<span class="sourceLineNo">100</span>     * Note that for {@link Enum} and reference fields, the core API uses a different type than the Java model<a name="line.100"></a>
<span class="sourceLineNo">101</span>     * classes ({@link org.jsimpledb.core.EnumValue} and {@link org.jsimpledb.core.ObjId}, respectively).<a name="line.101"></a>
<span class="sourceLineNo">102</span>     * Values can always be properly converted using the {@link Converter} returned by {@link #getConverter getConverter()}.<a name="line.102"></a>
<span class="sourceLineNo">103</span>     * &lt;/p&gt;<a name="line.103"></a>
<span class="sourceLineNo">104</span>     *<a name="line.104"></a>
<span class="sourceLineNo">105</span>     * @return this field's core-layer type definition<a name="line.105"></a>
<span class="sourceLineNo">106</span>     */<a name="line.106"></a>
<span class="sourceLineNo">107</span>    public FieldType&lt;?&gt; getFieldType() {<a name="line.107"></a>
<span class="sourceLineNo">108</span>        return this.fieldType;<a name="line.108"></a>
<span class="sourceLineNo">109</span>    }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span>    /**<a name="line.111"></a>
<span class="sourceLineNo">112</span>     * Get whether this field is indexed.<a name="line.112"></a>
<span class="sourceLineNo">113</span>     *<a name="line.113"></a>
<span class="sourceLineNo">114</span>     * @return whether this field is indexed<a name="line.114"></a>
<span class="sourceLineNo">115</span>     */<a name="line.115"></a>
<span class="sourceLineNo">116</span>    public boolean isIndexed() {<a name="line.116"></a>
<span class="sourceLineNo">117</span>        return this.indexed;<a name="line.117"></a>
<span class="sourceLineNo">118</span>    }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span>    /**<a name="line.120"></a>
<span class="sourceLineNo">121</span>     * Get the setter method associated with this field.<a name="line.121"></a>
<span class="sourceLineNo">122</span>     *<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * @return field property setter method, or null if this field is a sub-field of a complex field<a name="line.123"></a>
<span class="sourceLineNo">124</span>     */<a name="line.124"></a>
<span class="sourceLineNo">125</span>    public Method getSetter() {<a name="line.125"></a>
<span class="sourceLineNo">126</span>        return this.setter;<a name="line.126"></a>
<span class="sourceLineNo">127</span>    }<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
<span class="sourceLineNo">129</span>    @Override<a name="line.129"></a>
<span class="sourceLineNo">130</span>    public Object getValue(JObject jobj) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>        if (jobj == null)<a name="line.131"></a>
<span class="sourceLineNo">132</span>            throw new IllegalArgumentException("null jobj");<a name="line.132"></a>
<span class="sourceLineNo">133</span>        return jobj.getTransaction().readSimpleField(jobj, this.storageId, false);<a name="line.133"></a>
<span class="sourceLineNo">134</span>    }<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span>    @Override<a name="line.136"></a>
<span class="sourceLineNo">137</span>    public &lt;R&gt; R visit(JFieldSwitch&lt;R&gt; target) {<a name="line.137"></a>
<span class="sourceLineNo">138</span>        return target.caseJSimpleField(this);<a name="line.138"></a>
<span class="sourceLineNo">139</span>    }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span>    /**<a name="line.141"></a>
<span class="sourceLineNo">142</span>     * Get a {@link Converter} that converts this field values between core API type and Java model type.<a name="line.142"></a>
<span class="sourceLineNo">143</span>     * Only {@link Enum} and reference types require conversion; for all other types, this returns an identity converter.<a name="line.143"></a>
<span class="sourceLineNo">144</span>     *<a name="line.144"></a>
<span class="sourceLineNo">145</span>     * @param jtx transaction<a name="line.145"></a>
<span class="sourceLineNo">146</span>     * @return {@link Converter} from core API field type to Java model field type<a name="line.146"></a>
<span class="sourceLineNo">147</span>     */<a name="line.147"></a>
<span class="sourceLineNo">148</span>    public Converter&lt;?, ?&gt; getConverter(JTransaction jtx) {<a name="line.148"></a>
<span class="sourceLineNo">149</span>        return Converter.&lt;Object&gt;identity();<a name="line.149"></a>
<span class="sourceLineNo">150</span>    }<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span>    /**<a name="line.152"></a>
<span class="sourceLineNo">153</span>     * Set the Java value of this field in the given object.<a name="line.153"></a>
<span class="sourceLineNo">154</span>     * Does not alter the schema version of the object.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     *<a name="line.155"></a>
<span class="sourceLineNo">156</span>     * @param jobj object containing this field<a name="line.156"></a>
<span class="sourceLineNo">157</span>     * @param value new value<a name="line.157"></a>
<span class="sourceLineNo">158</span>     * @throws org.jsimpledb.core.DeletedObjectException if {@code jobj} does not exist in its associated {@link JTransaction}<a name="line.158"></a>
<span class="sourceLineNo">159</span>     * @throws org.jsimpledb.core.StaleTransactionException if the {@link JTransaction} associated with {@code jobj}<a name="line.159"></a>
<span class="sourceLineNo">160</span>     *  is no longer usable<a name="line.160"></a>
<span class="sourceLineNo">161</span>     * @throws IllegalArgumentException if {@code value} is not an appropriate value for this field<a name="line.161"></a>
<span class="sourceLineNo">162</span>     * @throws IllegalArgumentException if {@code jobj} is null<a name="line.162"></a>
<span class="sourceLineNo">163</span>     */<a name="line.163"></a>
<span class="sourceLineNo">164</span>    public void setValue(JObject jobj, Object value) {<a name="line.164"></a>
<span class="sourceLineNo">165</span>        if (jobj == null)<a name="line.165"></a>
<span class="sourceLineNo">166</span>            throw new IllegalArgumentException("null jobj");<a name="line.166"></a>
<span class="sourceLineNo">167</span>        jobj.getTransaction().writeSimpleField(jobj, this.storageId, value, false);<a name="line.167"></a>
<span class="sourceLineNo">168</span>    }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>    @Override<a name="line.170"></a>
<span class="sourceLineNo">171</span>    SimpleSchemaField toSchemaItem(JSimpleDB jdb) {<a name="line.171"></a>
<span class="sourceLineNo">172</span>        final SimpleSchemaField schemaField = new SimpleSchemaField();<a name="line.172"></a>
<span class="sourceLineNo">173</span>        this.initialize(jdb, schemaField);<a name="line.173"></a>
<span class="sourceLineNo">174</span>        return schemaField;<a name="line.174"></a>
<span class="sourceLineNo">175</span>    }<a name="line.175"></a>
<span class="sourceLineNo">176</span><a name="line.176"></a>
<span class="sourceLineNo">177</span>    @Override<a name="line.177"></a>
<span class="sourceLineNo">178</span>    void calculateRequiresValidation() {<a name="line.178"></a>
<span class="sourceLineNo">179</span>        super.calculateRequiresValidation();<a name="line.179"></a>
<span class="sourceLineNo">180</span>        this.requiresValidation |= this.unique;<a name="line.180"></a>
<span class="sourceLineNo">181</span>    }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span>    void initialize(JSimpleDB jdb, SimpleSchemaField schemaField) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>        super.initialize(jdb, schemaField);<a name="line.184"></a>
<span class="sourceLineNo">185</span>        schemaField.setType(this.fieldType.getName());<a name="line.185"></a>
<span class="sourceLineNo">186</span>        schemaField.setIndexed(this.indexed);<a name="line.186"></a>
<span class="sourceLineNo">187</span>    }<a name="line.187"></a>
<span class="sourceLineNo">188</span><a name="line.188"></a>
<span class="sourceLineNo">189</span>    @Override<a name="line.189"></a>
<span class="sourceLineNo">190</span>    void outputMethods(final ClassGenerator&lt;?&gt; generator, ClassWriter cw) {<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span>        // Getter<a name="line.192"></a>
<span class="sourceLineNo">193</span>        this.outputReadMethod(generator, cw, ClassGenerator.READ_SIMPLE_FIELD_METHOD);<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span>        // Setter<a name="line.195"></a>
<span class="sourceLineNo">196</span>        final Method writeMethod = ClassGenerator.WRITE_SIMPLE_FIELD_METHOD;<a name="line.196"></a>
<span class="sourceLineNo">197</span>        generator.overrideBeanMethod(cw, this.setter, this.storageId, new ClassGenerator.CodeEmitter() {<a name="line.197"></a>
<span class="sourceLineNo">198</span>            @Override<a name="line.198"></a>
<span class="sourceLineNo">199</span>            public void emit(MethodVisitor mv) {<a name="line.199"></a>
<span class="sourceLineNo">200</span><a name="line.200"></a>
<span class="sourceLineNo">201</span>                // Push field value<a name="line.201"></a>
<span class="sourceLineNo">202</span>                mv.visitVarInsn(Type.getType(JSimpleField.this.typeToken.getRawType()).getOpcode(Opcodes.ILOAD), 1);<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span>                // Wrap result if needed<a name="line.204"></a>
<span class="sourceLineNo">205</span>                if (JSimpleField.this.typeToken.isPrimitive())<a name="line.205"></a>
<span class="sourceLineNo">206</span>                    generator.wrap(mv, Primitive.get(JSimpleField.this.typeToken.getRawType()));<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>                // Push "true"<a name="line.208"></a>
<span class="sourceLineNo">209</span>                mv.visitInsn(Opcodes.ICONST_1);<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span>                // Invoke Transaction.writeSimpleField()<a name="line.211"></a>
<span class="sourceLineNo">212</span>                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(JTransaction.class),<a name="line.212"></a>
<span class="sourceLineNo">213</span>                  writeMethod.getName(), Type.getMethodDescriptor(writeMethod), false);<a name="line.213"></a>
<span class="sourceLineNo">214</span>            }<a name="line.214"></a>
<span class="sourceLineNo">215</span>        });<a name="line.215"></a>
<span class="sourceLineNo">216</span>    }<a name="line.216"></a>
<span class="sourceLineNo">217</span><a name="line.217"></a>
<span class="sourceLineNo">218</span>    @Override<a name="line.218"></a>
<span class="sourceLineNo">219</span>    final JSimpleFieldInfo toJFieldInfo() {<a name="line.219"></a>
<span class="sourceLineNo">220</span>        return this.toJFieldInfo(0);<a name="line.220"></a>
<span class="sourceLineNo">221</span>    }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span>    JSimpleFieldInfo toJFieldInfo(int parentStorageId) {<a name="line.223"></a>
<span class="sourceLineNo">224</span>        return new JSimpleFieldInfo(this, parentStorageId);<a name="line.224"></a>
<span class="sourceLineNo">225</span>    }<a name="line.225"></a>
<span class="sourceLineNo">226</span>}<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>




























































</pre>
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